Abstract: An ion optical element comprises: a plurality of rod electrodes, each having a convex portion formed at one end; a plurality of electrode members connected corresponding to each of the plurality of rod electrodes; and a non-conductive base member having a window portion through which ions pass, and fixing the plurality of electrode members and the plurality of rod electrodes at positions surrounding the window portion. Each of the plurality of electrode members has a through hole formed therein. The base member has a concave portion formed therein corresponding to the convex portion. The plurality of electrode members and the plurality of rod electrodes are positioned with respect to the base member by fitting the convex portion into the concave portion through the through hole.

Abstract: One aspect of a method for manufacturing a quadrupole mass filter according to the present invention is a method for manufacturing a quadrupole mass filter including four rod electrodes, comprising a first step (S1, S2) of forming a hyperbolic surface by cutting at least a part of a side surface or a peripheral surface of each of four rod-shaped members over a longitudinal direction, each of the four rod-shaped members having a length in a range of 80 mm or more and 120 mm or less, and a second step (S3) of positioning and fixing the four rod-shaped members, on which the hyperbolic surfaces are respectively formed, as rod electrodes using a holding member, such that the four rod electrodes surround a central axis and the hyperbolic surface of each rod electrode faces the central axis.

Abstract: A particulate water-absorbing agent composition having a high caking resistance performance can be obtained without deteriorating water-absorbing performance under pressure by a method for producing a particulate water-absorbing agent composition, the method including, in at least one step selected from a monomer aqueous solution preparation step, a polymerization step, and an optional hydrogel grinding step, adding a water-soluble polyalkylene glycol having a mass-average molecular weight of 3000 or less in an amount of from 0.01 mass % to 0.25 mass % with respect to a total mass of monomers contained in the monomer aqueous solution, and after the surface crosslinking step, adding a nonionic polymer having a polyalkylene glycol chain in a structure and having a mass-average molecular weight of from 300 to 15000 in an amount of from 0.02 mass % to 0.40 mass % with respect to a water-absorbent resin that has been surface-crosslinked.

Abstract: A quadrupole mass filter (50) has a main-rod section (500) including rod electrodes arranged around a central axis C and a first pre-rod section (501) including pre-rod electrodes. Along with an RF voltage having a frequency corresponding to the m/z of an ion, DC voltage is applied to the pre-rod electrodes. The DC voltage and the amplitude of the RF voltage are determined so that a-value and q-value substantially satisfy the conditions that a?0, (???x·?)N={(½)+m}? and ?y·?·N={(½)+n}?, where m, n and N are natural numbers, with the X-axis direction connecting the centers of two rod electrodes facing each other across the central axis in a plane perpendicular to the central axis, the Y-axis direction connecting the centers of the other two rod electrodes in the plane, and ?x and ?y representing ? values (0<?<1) related to a secular oscillation of an ion in the X and Y directions, respectively.

Abstract: A quadrupole mass spectrometer includes a quadrupole mass filter including: a main rod portion including four main rod electrodes; a pre-rod portion including four pre-rod electrodes, where, at an end opposite to the main rod portion, the four pre-rod electrodes are disposed to be aligned on an inscribed circle having the same radius centered on the ion optical axis, and, at the other end facing the main rod portion, two pre-rod electrodes facing each other across the ion optical axis and the other two pre-rod electrodes are disposed to be aligned on an inscribed circle having different radii centered on the ion optical axis; a main voltage applying unit to apply, to each main rod electrode, a voltage created by superimposing a DC voltage and an RF voltage; and a pre-voltage applying unit to apply an RF voltage having a same frequency as the RF voltage to each pre-rod electrode.

Abstract: A nebulizer includes: a nozzle portion provided with an ejection port through which gas is ejected; and a capillary having a tip end portion disposed to protrude from the ejection port. A plurality of protruding portions protruding inward in a radial direction of the ejection port are arranged side by side in a circumferential direction on a portion of an inner circumferential surface of the nozzle portion, the portion of the inner circumferential surface defining the ejection port. The plurality of protruding portions are provided to define an inscribed circle. The capillary passes through inside the inscribed circle.

Abstract: A quadrupole mass filter (50) has a main-rod section (500) including rod electrodes arranged around a central axis C and a first pre-rod section (501) including pre-rod electrodes. Along with an RF voltage having a frequency corresponding to the m/z of an ion, DC voltage is applied to the pre-rod electrodes. The DC voltage and the amplitude of the RF voltage are determined so that a-value and q-value substantially satisfy the conditions that a?0, (???x·?)N={(½)+m}? and ?y·?·N={(½)+n}?, where m, n and N are natural numbers, with the X-axis direction connecting the centers of two rod electrodes facing each other across the central axis in a plane perpendicular to the central axis, the Y-axis direction connecting the centers of the other two rod electrodes in the plane, and ?x and ?y representing ? values (0<?<1) related to a secular oscillation of an ion in the X and Y directions, respectively.

Abstract: For a low-cost, high-accuracy tuning of the voltages applied to electrodes in a mass spectrometer, a chromatograph mass spectrometer (1) includes: a medium supplier (11) which supplies a medium as a mobile phase or carrier gas; a passage (15) which introduces, into the mass spectrometer, the medium supplied from the medium supplier; an ionizer (211) which ionizes the medium together with a substance coming from a member forming the passage into the medium; a measurement executer (25, 26, 43) which performs a mass separation and a measurement of a specific ion, using multiple measurement conditions which differ from each other in the value of voltage applied to at least one electrode included in one or more electrodes in the mass spectrometer; and a voltage value determiner (44) which determines the value of voltage applied to each electrode so that the intensity of the ion satisfies a predetermined criterion.

Abstract: A quadrupole mass spectrometer includes a quadrupole mass filter including: a main rod portion including four main rod electrodes; a pre-rod portion including four pre-rod electrodes, where, at an end opposite to the main rod portion, the four pre-rod electrodes are disposed to be aligned on an inscribed circle having the same radius centered on the ion optical axis, and, at the other end facing the main rod portion, two pre-rod electrodes facing each other across the ion optical axis and the other two pre-rod electrodes are disposed to be aligned on an inscribed circle having different radii centered on the ion optical axis; a main voltage applying unit to apply, to each main rod electrodes, a voltage created by superimposing a DC voltage and an RF voltage; and a pre-voltage applying unit to apply an RF voltage having a same frequency as the RF voltage to each pre-rod electrodes.

Abstract: After performing an analysis on a standard sample for a predetermined time, a plurality of ion optical elements such as an ion guide are sequentially selected one by one, and a direct-current voltage having a polarity different from that at the time of analysis is temporarily applied. Meanwhile, intensity data of ions having a specific m/z are continuously collected. After thus collecting the data, the ratio of the ion intensities before and after application of direct-current voltages having different polarities is calculated for each ion optical element, and it is determined whether or not the ratio is equal to or larger than a predetermined threshold value.

Abstract: An information processing apparatus includes a processor configured to: acquire, from results of character recognition performed on a target image including character strings, attribute information indicating an attribute to which a key character string and a value character string belong, the key character string as a character string specified beforehand as a key and the value character string as a character string indicating a value corresponding to the key character string; acquire by using the attribute information the key character string corresponding to the value character string extracted from the results of the character recognition; and output the key character string and the value character string corresponding to the key character string.

Abstract: A single type quadrupole mass spectrometer equipped with an ion source by the ESI method, which is a small device including a vacuum pump having a relatively small evacuation speed. The internal diameter of a desolvation tube for introducing ions from an ionization chamber into a first intermediate vacuum chamber is set to 0.4 mm ?, which is large for a small mass spectrometer. The evacuation speed of a rotary pump is determined so that the product of the cross-sectional opening area of the desolvation tube and the pressure in the first intermediate vacuum chamber falls within a range of 15 to 40 mm2·Pa. This can ensure high detection sensitivity and reduce clogging of the desolvation tube due to droplets. Since the pressure in the first intermediate vacuum chamber does not need to be increased more than necessary, a small rotary pump having a small evacuation speed can be used.

Abstract: An information processing apparatus includes a processor configured to: acquire an image corresponding to a key character string from a target image in response to the key character string that serves as a character string specified beforehand as a key and is acquired from results of character recognition performed on the target image including character strings; extract, by using results of acquiring the image corresponding to the key character string, from the results of the character recognition a value character string that serves as a character string indicating a value corresponding to the key character string; and output the key character string and the value character string corresponding to the key character string.

Abstract: An information processing device includes: a processor configured to: acquire an invoice to be processed; acquire a document related to the invoice; and perform a process of outputting a suggestion as to a predetermined matter that is to be executed next in accordance with an inconsistency between a content described in the invoice and a content described in the document.

Abstract: An information processing apparatus includes a processor configured to present an account title relating to information obtained from a voucher together with related information relating to the account title.

Abstract: A mass spectrometer adopting a configuration of a multi-stage differential evacuation system appropriately performs optimization of a direct-current voltage applied to a plurality of ion optical elements for transporting ions. An auto-tuning controller acquires intensity data of ions derived from a predetermined component while changing a direct-current voltage applied to ion guides and the like, and searches for a direct-current voltage at which the intensity is maximized. When the direct-current voltage applied to a certain ion optical element is changed at the time of automatic adjustment, the direct-current voltage applied to all the ion optical elements thereafter is also changed by the same amount. Since the direct-current voltage difference between two adjacent ion optical elements always changes at only one point, the direct-current potential difference can be determined so as to optimize the ion passage efficiency.

Abstract: An information processing apparatus includes a processor configured to: acquire, from results of character recognition performed on a target image including character strings, attribute information indicating an attribute to which a key character string and a value character string belong, the key character string as a character string specified beforehand as a key and the value character string as a character string indicating a value corresponding to the key character string; acquire by using the attribute information the key character string corresponding to the value character string extracted from the results of the character recognition; and output the key character string and the value character string corresponding to the key character string.

Abstract: An information processing apparatus includes a processor configured to: acquire an image corresponding to a key character string from a target image in response to the key character string that serves as a character string specified beforehand as a key and is acquired from results of character recognition performed on the target image including character strings; extract, by using results of acquiring the image corresponding to the key character string, from the results of the character recognition a value character string that serves as a character string indicating a value corresponding to the key character string; and output the key character string and the value character string corresponding to the key character string.

Abstract: An information processing device includes: a processor configured to: acquire an invoice to be processed; acquire a document related to the invoice; and perform a process of outputting a suggestion as to a predetermined matter that is to be executed next in accordance with an inconsistency between a content described in the invoice and a content described in the document.

Abstract: A quadrupole mass filter includes: four electrodes arranged to surround a central axis and constituting a quadrupole; attachment portions to which a plurality of electrical conductors are attached, at least one of the electrical conductors being arranged at a position that lies in a direction toward an area between each of the adjacent electrodes among the four electrodes, as viewed from the central axis; and a holder having a hollow portion and holding the four electrodes and the plurality of electrical conductors, wherein the electrical conductors are attached to the respective attachment portions and held by the holder with elasticity of a material constituting the electrical conductors.